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Finding the Fourth Proportional to 80,953.86, 120,812.55 and 72,096.51

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Solution

The fourth proportional to 80,953.86, 120,812.55 and 72,096.51 is: 107,594.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,953.86 : 120,812.55 = 72,096.51 : x
  2. Step 2: Convert to fraction form
    80,953.86/120,812.55 = 72,096.51/x
  3. Step 3: Cross multiply
    80,953.86x = 120,812.55 × 72,096.51
  4. Step 4: Simplify right side
    80,953.86x = 8,710,163,219.20
  5. Step 5: Solve for x
    x = 8,710,163,219.20/80,953.86
  6. Step 6: Final answer
    x = 107,594.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.